Anhui two-color injection molding TPR cost

TPE overmolding generally adopts the two-shot injection molding process,

The thickness of the TPE, TPR overmolding layer. In most overmolding applications, a wall thickness range of 1.5-3.0mm will ensure good adhesion. If the TPE layer is too thin, injection molding is difficult, adhesion strength is low, and feel is poor. If the TPE layer is too thick, on one hand the cost is higher, and on the other hand, defects such as shrinkage and bubbles are prone to occur.

TPE is a classic aggregation-induced emission molecule, meaning it has no fluorescence in solution but strong fluorescence in solid state, so transparent TPE materials also have important applications in fields such as organic optoelectronics.

Two-color injection molding TPR

Fix the already injection-molded hard plastic part onto the overmolding mold, then at an appropriate temperature, inject and bond the TPE soft rubber onto the hard plastic part, and cool to obtain the product. The injection temperature for overmolding depends on the hard plastic material being overmolded.

TPE overmolding generally adopts the two-shot injection molding process, that is, fixing the injection-molded hard plastic part onto the overmolding mold,

To prevent contamination of TPE raw materials and the presence of old materials or impurities in the screw and attachment recesses, especially materials with poor thermal stability, it is necessary to use screw cleaning agent to clean all parts before use and after shutdown to ensure they do not have impurities.

SEBS is the product of hydrogenation of SBS. SEBS has a saturated molecular structure, which leads to its very different characteristics. It has the necessary aging resistance, yellowing resistance, and also promotes excellent properties such as high temperature resistance and corrosion resistance, which are required to produce transparent TPE. Thus, transparent TPE is manufactured.

Two-color injection molding TPR

Then at an appropriate temperature, inject and bond the TPE soft rubber onto the hard plastic part, and cool to obtain the product. The injection temperature for overmolding depends on the hard plastic material being overmolded.

For two-shot overmolding of nylon using a regular injection molding machine, it is recommended that before overmolding,

Transparent TPE materials have different product properties in different applications. Thermoplastic elastomer, also called TPE material, transparent TPE not only has the processing properties of thermoplastics, but also has the physical properties of vulcanized rubber. This is the so-called advantageous combination of plastic and rubber, and transparent TPE is widely used in people's daily life and production.

Because transparent TPE material requires high light transmittance, the surface quality of the product must be strict, without any defects such as streaks, pores, whitening, halos, black spots, discoloration, poor gloss, etc. Therefore, throughout the injection molding process, strict and even special requirements must be placed on TPE raw materials, equipment, molds, and even product design.

Two-color injection molding TPR

First, preheat and bake the nylon part, because nylon has strong water absorption, and overmolding requires higher molding temperature; preheating before overmolding can remove moisture, which is conducive to quick hot overmolding.